Features
1. Designer friendly since design is in plain HTML. It uses existing HTML controls.
2. Can use simple PHP classes, Controls in HTML will be directly populated to PHP class.
3. Can call PHP class methods directly from HTML control events.
4. Can change the value and behavior of HTML controls from PHP method.
5. The whole process is backed by ajax.
6. Provides custom controls for non standard HTML controls like Label, AutoComplete, FCKEditor etc.